"Ain-i- Akbari",the rent-roll of Akbar, the sixteenth-century Mughal emperor, and "Manasa-mangal,"the work of a Bengali poet, Bipradas Pipilai, of the late fifteenth century, both make mention of the city's early name's being "Kolikata", from which Kolkata/Calcutta have been derived

There is lot of discussion on how the city got its name.